CN2650061Y - Permanent-magnetic giant magnetic resistance GMR welding gun and workpiece relative position detecting sensor - Google Patents
Permanent-magnetic giant magnetic resistance GMR welding gun and workpiece relative position detecting sensor Download PDFInfo
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- CN2650061Y CN2650061Y CN 200320116511 CN200320116511U CN2650061Y CN 2650061 Y CN2650061 Y CN 2650061Y CN 200320116511 CN200320116511 CN 200320116511 CN 200320116511 U CN200320116511 U CN 200320116511U CN 2650061 Y CN2650061 Y CN 2650061Y
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- gmr
- magnetic
- sensor
- welding gun
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Abstract
The utility model discloses a sensor for detecting the relative position between a permanent magnetic GMR welding gun and workpiece, which comprises a 5 multiplied by 2.5MM four grids to 5 multiplied by 10.0MM 24 grids GMR sensitive detector, a NdFeB or SMCO permanent magnet with the remanent induction intensity 0.5 multiplied by 10<3> to 50 multiplied by 10<3>GS, a surface-mounted integrated operational amplifying circuit, an output zero potentiometer and a non-ferrous metal shell, etc. The sensor integrates a sensitive magnetic head and an amplifying circuit, with high precision up to 0.1MM; and has the advantages of high interference resistance, high impact strength, simple circuit, small volume, and high performance cost ratio. The detection range of the sensor is 0-15MM, thereby realizing an easy installation and debugging, and high practicability.
Description
Technical field
The utility model relates to a kind of sensor---the relative position detecting sensor of noncontact, huge magnetic magnetic resistance (GMR) welding gun of magneto and workpiece.It is used for realizing in the ferrous metal welding process detection of relative height between the welding gun and workpiece or spacing, reaches welding gun control robotization.
Background technology
Welding is that people carry out the research and production activity a kind of manufacturing process that arrives commonly used.In electric arc welding process, at first should be to make electric arc and weld seam centering, this is the key that guarantees welding quality.Along with the development of Automation of Welding, it is more and more important that soldering joint automatic tracking seems.For example, though arc welding robot can be by the program of establishment in advance along certain orbiting motion, even the track that gets by " teaching ", the also physical location of weld seam always.This species diversity be since in producing in batches the factor such as very inaccurate of the out of true of the mismachining tolerance of workpiece, the thermal deformation in the welding process, anchor clamps and track program itself comprehensively cause.
Principle of work from motion tracking is: the information by sensor obtains, be used for control executing mechanism after treatment, adjust the relative position (being the position, the left and right sides and the high and low position of welding gun) of welding gun and workpiece in real time, thereby realize welding process from motion tracking.
At present, the sensor that can reach this special detection purpose have contact with contactless two kinds: the feeler lever that has of contact contacts, i.e. switching regulator, differential transformer type, photo-electric; Having of electrode contact: detect the voltage and current of contact electrode etc.Contactless has: electromagnetic type and eddy current type and optical profile type etc.Optical profile type has comprised some array sensor, line array sensor, area array sensor.The major defect of these sensors is as follows: all feeler lever need be arranged for switching regulator, differential transformer type, light contact, long-term and workpiece friction can cause the lost of life.And sensors such as electromagnetic type, eddy current type, linear array, planar array type are the non-contact detecting sensor, though the life-span is long, still have deficiency.Such as: electromagnetic type, eddy current type need be made up of excitation power supply, sensor coil and testing circuit, and volume is big, and reliability is not high enough, and the influence of workpiece misalignment is big, need do compensation correction; Though do not have the misalignment influence for front, dot matrix, area array sensor, need the lasing light emitter excitation.Because the arc light intensity of electric arc is big, the power spectrum bandwidth very easily causes interference to them.In addition, volume is bigger, and impact resistance is poor, and accuracy of detection can only be accomplished 0.2mm at present.
Summary of the invention
The purpose of this utility model is to provide a kind of and solves that the tracking between the welding gun and workpiece detects in the welding processing automation process, improve accuracy of detection and reliability, belong to the relative position detecting sensor of huge magnetic magnetic resistance (GMR) welding gun of a kind of noncontact magneto and workpiece.
The technical scheme that its technical matters that solves the utility model adopts is: responsive magnetic head, the residual magnetic flux density made by the huge magnetic of hi-tech GMR of 5 * 2.5mm, four grid to 5 * 10.0mm 24 grid are 0.5 * 103 to 50 * 10
3Parts such as the NdFeB of Gs or SmCo permanent magnet, mounted type integrated operational amplifier circuit, output zero potentiometer and non-ferrous metal shell are formed.Be characterized in the huge magnetosensitive sense of GMR magnetic head, it is different fully with the principle of work of existing linear array, dot matrix and area array sensor, the former is the magnetics principle, the latter is an optical principle, GMR resistance changes with the air-gap flux quantitative changeization between welding gun and the workpiece (mother metal), change to obtain the variable quantity of welding gun and the relative position of workpiece by the potential difference (PD) on the GMR, the range size by this variable quantity can control executing mechanism be adjusted realizes the tracking of welding gun hoverheight.
The beneficial effects of the utility model are, responsive magnetic head of this set of sensors and amplifying circuit are one, and the precision height can reach 0.1mm; Antijamming capability is strong; Excellent in cushion effect; Circuit is simple; Volume is little; The cost performance height.Sensing range is 0-15mm, and Installation and Debugging are convenient, practical.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model electrical schematic diagram.
Fig. 2 is the utility model embodiment front view (FV).
Fig. 3 is the utility model embodiment side view.
Fig. 4 is the utility model embodiment vertical view
Be labeled as among the figure: 1.GMR responsive magnetic head, 2. signal amplification circuit plate, 3. aviation plug and socket, 4. output zero potentiometer, 5. permanent magnet, 6. shell.
Embodiment
As Fig. 2, shown in Figure 3, GMR sensing head (1) is positioned at the bottom.This sensing head (1) is made by the huge magnetic magnetic resistance (GMR) of 5 * 2.5mm, four grid, and with high-intensity rubber agent it is bonded on the substrate securely, is 0.5 * 10 with residual magnetic flux density
3NdFeB permanent magnet (5) be contained in GMR sensing head (1) near, distance between the two is 6mm.The working power of GMR sensing head (1) is supplied with by the high precision Voltage stabilizing module, the input end of its output terminal and signal amplification circuit (2) module couples together with lead, and then with a four-core concentric cable with wherein two outputs that are used for amplifier, other two are used for power supply.The output line of two cable connections and amplifier is fixed on them on the XS12 type aviation socket (3) with welding method, and this socket (3) is connected with the end cap of shell with screw, and this end is detachable, and end cap and shell (6) also are the screw retention with two M3.Power lead and signal wire are that 1.5m is long, and the two ends of these lines are connected on respectively on the XS12 type aviation socket head (3).The energising debugging, working power is 5V DC, working current is less than 10mA.Rw transfers to zero point to the output voltage of signal amplifier (2) by output zero potentiometer (4).Casting epoxy resin in shell is fixed as one amplifying circuit (2) and the responsive magnetic head (1) of GMR, permanent magnet (5) at last.
Claims (3)
1. the relative position detecting sensor of the huge magnetic magnetic resistance of magneto GMR welding gun and workpiece comprises signal amplification circuit plate (2), aviation plug and socket (3), output zero potentiometer (4), shell (6) is characterized in that also comprising the responsive magnetic head (1) of GMR, permanent magnet (5).
2. sensor as claimed in claim 1 is characterized in that the responsive magnetic head of described GMR (1) made by the huge magnetic of hi-tech GMR of 5 * 2.5mm, four grid to 5 * 10.0mm 24 grid.
3. sensor as claimed in claim 1 is characterized in that described permanent magnet (5) is 0.5 * 10 for residual magnetic flux density
3To 50 * 10
3The NdFeB of Gs or SmCo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116511 CN2650061Y (en) | 2003-10-29 | 2003-10-29 | Permanent-magnetic giant magnetic resistance GMR welding gun and workpiece relative position detecting sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116511 CN2650061Y (en) | 2003-10-29 | 2003-10-29 | Permanent-magnetic giant magnetic resistance GMR welding gun and workpiece relative position detecting sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2650061Y true CN2650061Y (en) | 2004-10-20 |
Family
ID=34346280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320116511 Expired - Fee Related CN2650061Y (en) | 2003-10-29 | 2003-10-29 | Permanent-magnetic giant magnetic resistance GMR welding gun and workpiece relative position detecting sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2650061Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375890C (en) * | 2005-09-09 | 2008-03-19 | 清华大学 | Magnetic displacement sensor containing zero-setting GMR chip |
| CN100503126C (en) * | 2005-12-02 | 2009-06-24 | 桂林电子科技大学 | Welding-seam position and welding gun floating-height synchronous tracing sensor detection device and method |
| CN111412831A (en) * | 2020-03-27 | 2020-07-14 | 北京交通大学 | Impact-resistant magnetic liquid touch sensor |
-
2003
- 2003-10-29 CN CN 200320116511 patent/CN2650061Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375890C (en) * | 2005-09-09 | 2008-03-19 | 清华大学 | Magnetic displacement sensor containing zero-setting GMR chip |
| CN100503126C (en) * | 2005-12-02 | 2009-06-24 | 桂林电子科技大学 | Welding-seam position and welding gun floating-height synchronous tracing sensor detection device and method |
| CN111412831A (en) * | 2020-03-27 | 2020-07-14 | 北京交通大学 | Impact-resistant magnetic liquid touch sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |